The short answer is: increasingly, yes, many people consider it problematic, though it has not been universally rejected.
It refers to a period of unseasonably warm, dry weather occurring in late autumn (typically October or November) after the first frost. is indian summer a derogatory term
To understand why, we need to look at the term's murky origins and how language evolves. The short answer is: increasingly, yes, many people
As with any potentially dated term, the respectful choice is simply to use one of the many clear, non-stereotyped alternatives. Language changes; this is one change that costs very little and shows awareness of history. The short answer is: increasingly